/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.cassandra.tools.nodetool;

import org.apache.cassandra.tools.NodeProbe;
import org.apache.cassandra.tools.nodetool.stats.StatsHolder;
import org.apache.cassandra.tools.nodetool.stats.StatsPrinter;
import org.apache.cassandra.tools.nodetool.stats.TpStatsHolder;
import org.apache.cassandra.tools.nodetool.stats.TpStatsPrinter;
import picocli.CommandLine.Command;
import picocli.CommandLine.Option;

@Command(name = "tpstats", description = "Print usage statistics of thread pools")
public class TpStats extends AbstractCommand
{
    @Option(paramLabel = "format",
            names = { "-F", "--format" },
            description = "Output format (json, yaml)")
    private String outputFormat = "";

    @Option(paramLabel = "verbose",
            names = { "-v", "--verbose" },
            description = "Display detailed metrics about thread pool's sizes")
    private boolean verbose = false;

    @Override
    public void execute(NodeProbe probe)
    {
        if (!outputFormat.isEmpty() && !"json".equals(outputFormat) && !"yaml".equals(outputFormat))
        {
            throw new IllegalArgumentException("arguments for -F are json,yaml only.");
        }

        StatsHolder data = new TpStatsHolder(probe);
        StatsPrinter printer = TpStatsPrinter.from(outputFormat);
        printer.print(data, probe.output().out, verbose);
    }
}
